Roots and rhizomes of wild Asparagus: Nutritional composition, bioactivity and nanoencapsulation of the most potent extract

Adouni, Khaoula; Júlio, Ana; Santos‐Buelga, Celestino; Gonzaléz-Paramás, Ana M.; Filipe, Patrícia; Rijo, Patrícia; Lima, Sofia A. Costa; Fernandes, Ângela; Ferreira, Isabel C.F.R.; Fernández‐Ruiz, Virginia; Morales, Patrícia; Flamini, Guido; Achour, Lotfi; Fonte, Pedro

doi:10.1016/j.fbio.2021.101334

Cited by 7 publications

(14 citation statements)

References 68 publications

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“…The content of anthocyanins was lower than those reported by Dong et al [ 62 ]. The DPPH scavenging activity was similar to that reported by Adouni et al [ 61 ], but lower than that reported in fresh spears [ 59 ].…”

Section: Discussionsupporting

confidence: 87%

“…Many studies investigated the diversity and abundance of polyphenols in different types and cultivars of asparagus under various growing conditions [ 57 , 58 ]. The content of polyphenols in our study was similar to that reported by di Maro [ 59 ], but lower than those reported by other authors [ 60 , 61 ]. The content of anthocyanins was lower than those reported by Dong et al [ 62 ].…”

Section: Discussionsupporting

confidence: 86%

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Chemical Characterization and In Vitro Gas Production Kinetics of Alternative Feed Resources for Small Ruminants in the Maltese Islands

et al. 2023

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The ever-increasing human population, the problem associated with climate change and recent crises—COVID-19 disease and trade conflicts—all impacted on the availability and cost of animal feed raw materials. This is clearly visible in realities which heavily rely on importation such as islands and small states, where producers involved in the agricultural sector were strongly affected by the sharp increase in prices. To deal with these global issues, alternative resources are perceived to replace conventional ingredients. This work aimed at assessing the nutritive value of different resources (sheep feed, mature carob, Maltese bread, wild asparagus, prickly lettuce, and loquat) for small ruminants present in the Maltese Islands, analyzing their chemical composition, gas production kinetics and antioxidant properties. In general, the variation in chemical composition resulted in different rumen fermentation kinetics (p < 0.007). The ratio between GP-24 h and GP-48 h was higher in Maltese bread than other substrates; loquat, prickly lettuce and wild asparagus showed lower fermentation kinetics in accordance with their high NDF and ADF contents. The antioxidant activity may be partially related to the polyphenolic content that was higher in wild asparagus, prickly lettuce and loquat. All feed characteristic confirmed their potential to be included as ingredients in ruminant diets and as a source of fiber.

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Section: Discussionsupporting

confidence: 87%

Section: Discussionsupporting

confidence: 86%

Chemical Characterization and In Vitro Gas Production Kinetics of Alternative Feed Resources for Small Ruminants in the Maltese Islands

et al. 2023

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Section: Resultsmentioning

confidence: 94%

“…There are several publications that point to caffeic acid and other related hydroxycinnamic acids from asparagus root as the main allelopathic substances responsible for both decay and replanting problems ( Kato-Noguchi et al, 2017 ; Kato-Noguchi et al, 2018 ; Liu and Matsubara, 2018 ). The most recent publications on the chemical and functional characterization of the asparagus root suggest that its high caffeic acid content, which varies between 0.57 ( Adouni et al, 2022 ), 1.03 ( Symes et al, 2018 ) and 2.16 g/Kg of dry root ( Zhang et al, 2019 ), make these by-products a magnificent source to obtain natural bioactive extracts with different potentialities in the field of food-health, derived from their antioxidant activity. Our results are in the intermediate range found in bibliography, with caffeic acid values ranging from 0.54 and 1.34 g/Kg dry sample.…”

Section: Resultsmentioning

confidence: 99%

“…These authors have already highlighted the existing controversy about the main phenolic components in asparagus root, establishing that, contrary to what had been previously published, they had found caffeic acid as a major component and had not detected the presence of rutin or any other flavonoid. Adouni et al (2022) also reported that phenolic composition from asparagus root consisted of several hydroxycinnamic acids and derivatives, being caffeic acid the most abundant compound, whereas no flavonoids were found. These discrepancies can be explained based on the wellestablished fact that considerable differences can be found in the qualitative and quantitative composition of the phytochemicals present in plant organs depending on various factors, including variety, genotype, climate, growing conditions, etc.…”

Section: Phytochemical Composition From Asparagus Rootsmentioning

confidence: 94%

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Sustainable valorization of co-products from asparagus cultivation by obtaining bioactive compounds

Alcaide,

Hamdi,

Guilleín-Bejarano

et al. 2023

Front. Plant Sci.

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Asparagus cultivation generates every year a significant amount of by-products that consist of root and frond. Leaving these residues on the fields after harvesting negatively affects the following asparagus crops, since they release autotoxic (allelopathic) substances into the soil, whose accumulation causes that asparagus yields gradually decrease over the years, becoming an unprofitable crop in a period of about 10 to 15 years. This phenomenon is known as decay and forces the entire asparagus plantation to be lifted (abandoned). On the other hand, once a certain plantation has been lifted, it is not profitable to immediately re-plant new asparagus plants, since the yields that are achieved are never more than half of normal ones. It is necessary to wait an average of 4 or 5 years before replanting asparagus in these lands. This phenomenon is known as the replanting problem, and causes the need to continually search for new land for growing asparagus. Another added problem for farmers is that the elimination of those plant residues from asparagus cultivation entails significant economic costs. For all these reasons, it is essential to seek alternatives for the management of that waste that improve the sustainability of the crop within the scope of the circular economy. In this context, this work proposes the valorization of asparagus by-products by obtaining bioactive compounds. Main objectives of the present work include: i) phytochemical analyses of asparagus fronds and roots; ii) obtaining bioactive extracts, with distinct technological and nutritional functionalities, by using an environmentally sustainable extraction process, easy to implement in the practice of a food industry and with methods compatible with food use. Characterization of asparagus by-products shown that fronds had an average flavonoid content of 2.637 ± 0.014 g/Kg fresh weight, which is up to 5-6 times higher than that of the spears; and roots contained up to 10 times more saponins (2.25 g/Kg fresh weight), which were accompanied by lower quantities of phenolic acids (368 mg/Kg fresh weight). Statistical analysis revealed that those phytochemical contents were mainly determined by location and phase of the vegetative cycle, whereas genetic factors did not significantly influence them. Based on the results of the present work, the proposal for the recovery and valorization of asparagus by-products is based on obtaining two bioactive extracts, the first being an antioxidant extract enriched in flavonoids, with an average yield of 10.7 g/Kg fresh frond and a flavonoid richness of 17%; and the second, a saponins extract with an average yield of 10.3 g/Kg fresh root and a richness of 51%. These natural extracts have great techno-functional potential in the agri-food industry and some of them are already being tested as additives in the preparation of soups, breads and meat products.

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Plant extracts: Antioxidant and antimicrobial properties and their effect of nanoencapsulation

Parham

Nur

2023

Nanotechnology in Herbal Medicine

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Roots and rhizomes of wild Asparagus: Nutritional composition, bioactivity and nanoencapsulation of the most potent extract

Cited by 7 publications

References 68 publications

Chemical Characterization and In Vitro Gas Production Kinetics of Alternative Feed Resources for Small Ruminants in the Maltese Islands

Chemical Characterization and In Vitro Gas Production Kinetics of Alternative Feed Resources for Small Ruminants in the Maltese Islands

Sustainable valorization of co-products from asparagus cultivation by obtaining bioactive compounds

Plant extracts: Antioxidant and antimicrobial properties and their effect of nanoencapsulation

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